# Biesterfeld partners with Alpha Calcit for halogen-free flame retardants

Biesterfeld is expanding its polymer additive portfolio by adding Alpha Calcit's Alfrimal brand halogen-free flame retardants through a new partnership.

- Type: Partnership
- Announced: 2026-04-29
- Where: Germany
- Status: announced
- Products: halogen-free flame retardants, polymer additives
- Sectors: [Specialty Chemicals](https://endata.com/sectors/specialty-chemicals.md), [Plastics and Polymers](https://endata.com/sectors/plastics-polymers.md)

## Companies

- [Biesterfeld](https://endata.com/companies/46158.md) (partner)
- [Alpha Calcit](https://endata.com/companies/91580.md) (partner)

## Sources

- [plasticker.de](https://plasticker.de/index_en.php/intern/avz/avz/recybase/requipment/recybase/Plastics_News_48348_Norma_Group_Major_order_for_line_systems_in_premium_vehicles), 2026-04-28: "Biesterfeld is expanding its portfolio in the field of polymer additives and, as part of a new partnership with Alpha Calcit, is adding the flame-retardant products of the “Alfrimal” brand to its range."

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Data from Endata (https://endata.com/). Announcements are summarized from public sources and may be incomplete; check the linked originals.